864830406 has 32 divisors (see below), whose sum is σ = 1968945408. Its totient is φ = 250675040.

The previous prime is 864830387. The next prime is 864830411. The reversal of 864830406 is 604038468.

It is a super-2 number, since 2×864830406² = 1495863262284249672, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283341 + ... + 286376.

It is an arithmetic number, because the mean of its divisors is an integer number (61529544).

Almost surely, 2^864830406 is an apocalyptic number.

864830406 is an abundant number, since it is smaller than the sum of its proper divisors (1104115002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864830406 is a wasteful number, since it uses less digits than its factorization.

864830406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569756.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 864830406 is about 29407.9990138738. Note that the first 3 decimals coincide. The cubic root of 864830406 is about 952.7456694383.

The spelling of 864830406 in words is "eight hundred sixty-four million, eight hundred thirty thousand, four hundred six".